Finding the Fourth Proportional to 12,630,315.78, 17,425,856.88 and 7,730,429.76

Step by Step Solution

1. Step 1: Write the proportion equation
   12,630,315.78 : 17,425,856.88 = 7,730,429.76 : x
2. Step 2: Convert to fraction form
   12,630,315.78/17,425,856.88 = 7,730,429.76/x
3. Step 3: Cross multiply
   12,630,315.78x = 17,425,856.88 × 7,730,429.76
4. Step 4: Simplify right side
   12,630,315.78x = 134,709,362,618,652.73
5. Step 5: Solve for x
   x = 134,709,362,618,652.73/12,630,315.78
6. Step 6: Final answer
   x = 10,665,557.77